(n.) A mineral consisting of the hydrous sulphate of lime (calcium). When calcined, it forms plaster of Paris. Selenite is a transparent, crystalline variety; alabaster, a fine, white, massive variety.
Example Sentences:
(1) Ten alginates and seven gypsum products were tested.
(2) It is recommended that manufacturers pay more strict adherence to the requirements of the ISO Standard with regard to the availability and recommendation of suitable compatible gypsum products, and also that perhaps the actual Standard should be modified to be more realistic in its demands, and more discriminatory in its evaluation procedure.
(3) The diffusive properties of alginate membranes prepared by the interfacial reaction of sodium alginate solution with gypsum substrates were studied.
(4) The tensile strength of a dental gypsum was measured indirectly using both the diametral and the double-punch tests.
(5) Radiation shielding tables were developed from the calculated transmissions through Pb, concrete, gypsum, steel, plate glass, and water, using a technique which eliminates the "add one HVL" rule.
(6) The use of alginate and a recently introduced modified gypsum product as investing media, as well as centrifugation of the pour resin into the flask, offer no significant advantages over the originally introduced procedure.
(7) And unlike beach sand, the sands here, made up of eroded gypsum crystals, do not get scorching hot in the sun and can usually be walked on in bare feet, even on the hottest days.
(8) The best way of sterilization is to make a gypsum model from the hydrocolloid impression and place it in the furnace for 30 min in 60 degrees C.
(9) The results show that the dosage of gypsum should be 10-20 grams, preferably ground to at least 60 mesh powder, the fine powder over 60 mesh is not to be pre-decocted, but the coarse powder of 40 mesh needs pre-decocting.
(10) The content of calcium ion Ca2+ in gypsum decoction has been determined with coordination titration.
(11) Gypsum produced only 5% and granular dusts none at all.
(12) The fibrous dusts (other than gypsum) resulted in a high incidence of mesothelioma (30 - 67%).
(13) In a small area (approximately 40 km2) against the mountains there is a concentration of over 20 large plants: oil refinery; iron and steel mill; fertilizer, cement, and gypsum production; coke kilns; and chemical, paint, and many other ancillary plants.
(14) Although the tissue conditioners generally exhibited higher deformations and lower gypsum compatibility than specified by ADA Specification No.
(15) Dehydration conditions similar to those employed in wet calcination of gypsum appeared to be produced under atmospheric pressure when NaCl was present.
(16) (4) Different gypsum products responded differently to bonding agents.
(17) of gypsum board, lead, and plate glass at this radiation level was 1.8, 0.020, and 1.3 cm, respectively.
(18) Part I of this study considered the ability of alginate and gypsum combinations to reproduce a line on a test block.
(19) The advantages of the halo-fixateur therapy compared against extension and immobilization in Minerva gypsum are that secondary correction of positioning is possible; that functionally disturbing and extended spondylodeses are avoided; that care of the polytraumatized patient is facilitated; that X-ray films are easy to assess; and that the period of hospitalization is greatly reduced.
(20) We used a profilometer to determine the roughness average, maximum roughness, and waviness of the dies, control, gypsum, and silicone test surfaces.
Talc
Definition:
(n.) A soft mineral of a soapy feel and a greenish, whitish, or grayish color, usually occurring in foliated masses. It is hydrous silicate of magnesia. Steatite, or soapstone, is a compact granular variety.
Example Sentences:
(1) Instillation of a talc suspension with thoracostomy drainage is also a safe and effective technique and should be employed when tetracycline fails or is contraindicated.
(2) It does, however, support other work, such as an analysis in 2003 combining data from 16 studies, which found a 30% increase in ovarian cancer among talc users .
(3) Microscopic examination showed talc granulomas and arteritis.
(4) Four distinct forms of pulmonary disease caused by talc have been defined.
(5) Cancer incidence and cause-specific mortality were studied in a male cohort of 94 talc miners and 295 talc millers, exposed to non-asbestiform talc with low quartz content.
(6) This prospective study was designed to determine the efficacy of iodized talc pleurodesis in patients with pleural effusions.
(7) Lateral thoracotomy with pleural abrasion and application of talc was performed on 8 adult beagle dogs.
(8) At 5 weeks, dynamic transpulmonary and transrespiratory compliance were less in the TALC lungs when compared with CONTROL lungs.
(9) We conclude that the decrease in bone formation constitutes an important aspect of the host acute-phase response in a rat model of talc granulomatosis.
(10) Better estimates of exposure-dose relationships in talc and granite workers as well as longer-term animal studies are required to evaluate the harmfulness of these work environments at present-day exposure levels.
(11) Bone loss in talc granulomatosis is paralleled by hyperplasia of bone marrow in the rat.
(12) Talc (magnesium silicate) is a widely used, generally considered benign substance.
(13) Silica is a component of talc (magnesium silicate) used as a drug filler.
(14) Talcs under the Food and Drug Administration are not regulated as to asbestos content; however, all talcs were well below the level mandated by the Occupational Safety and Health Administration for industrial talcs.
(15) The etiology and possible role of systemic talc granulomatosis in the development of immunosuppressive illness is reported herein.
(16) Binding to talc on the other hand showed no specificity, and the sensitivity was less.
(17) 2) If the board and adjacent ones are firmly fixed, dust talc or chalk through the cracks to stop them rubbing together.
(18) We have examined workers exposed to curing fumes, processing dusts, and industrial talc and have begun to evaluate exposures of these workers in detail.
(19) The authors review the literature concerned with the carcinogenic hazards of a long term exposure to talc.
(20) The radioisotopes 46Sc, 60Co, 59Fe and 51Cr in the activated talc served as tracers.